form_forのデータがテーブルにに保存されない

Question

form_forを使用し非表示のフォームを作成したのですがモデルに保存できなくて困っています。
binding.pryをしたところcreateアクションにparamsでデータが送られてきていることは確認できています。

####ターミナル↓
19: def create
=> 20: binding.pry
21: UserFood.create(user_food_params)
22: redirect_to root_path
23: end

[1] pry(#<OrdersController>)> params
=> <ActionController::Parameters {"utf8"=>"✓", "authenticity_token"=>"oEWDCU7hgArdapqijWBEwMF9hJJ2pAIQQBL7Pqnh68BW1sPDs7kxLY2aV4Mx56Rzo3qNsJAy7ZKQCq963ah5WQ==", "user_food"=>{"food"=>"りんご", "price"=>"400", "quantity"=>"1"}, "commit"=>"1", "controller"=>"orders", "action"=>"create"} permitted: false>
[2] pry(#<OrdersController>)> user_food_params
=> <ActionController::Parameters {"food"=>"りんご", "price"=>"400", "quantity"=>"1"} permitted: true>
[3] pry(#<OrdersController>)>

###controller

class OrdersController < ApplicationController
  
  def index
    @user_food= UserFood.new
    
    if @user_food.save
    else
    end

    @user_foods = UserFood.all
    price = UserFood.sum(:price)
    quantity = UserFood.sum(:quantity)
    @total = ((price * quantity)/2)
  end

  def new
  end

  def create
    UserFood.create(user_food_params)
    redirect_to root_path
  end

  def destroy
    order = UserFood.find(params[:id])
    order.destroy
    redirect_to root_path
  end

  private
  def user_food_params
    params.require(:user_food).permit(:food, :price, :quantity)
  end

end

###index.html.haml

.number-box__row
  #1.number-box__row--btn
    = form_for(@user_food, url: orders_path ) do |f|
      = f.hidden_field :food, value: "りんご"
      = f.hidden_field :price, value: 400
      = f.hidden_field :quantity, value: 1
      = f.submit "1", class: "btn"

Comments

[winterboum]

その部分のlogを見たいです
及び、
user_food = UserFood.create(user_food_params)
として、user_food.errors.messages　を見るとsaveできなかった原因がわかります

[kabigon]

```
Started POST "/orders" for ::1 at 2020-05-15 18:32:17 +0900
Processing by OrdersController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"WNG1ep+naczPasz8hCTI5g8uooKz1Bmw+W+gbrdC3WSuQvWwYv/Y65+aAd04oyhVbSmroFVC9jIpd/QqwwtP/Q==", "user_food"=>{"food"=>"りんご", "price"=>"400", "quantity"=>"1"}, "commit"=>"1"}
 (0.1ms) BEGIN
 (0.2ms) ROLLBACK
Redirected to http://localhost:3000/
Completed 302 Found in 13320ms (ActiveRecord: 0.3ms)

Started GET "/" for ::1 at 2020-05-15 18:32:30 +0900
Processing by OrdersController#index as HTML
 (0.1ms) BEGIN
 (0.2ms) ROLLBACK
 (0.2ms) SELECT SUM(`user_foods`.`price`) FROM `user_foods`
 (0.1ms) SELECT SUM(`user_foods`.`quantity`) FROM `user_foods`
Rendering orders/index.html.haml within layouts/application
Rendered orders/_menu_index.html.haml (17.8ms)
UserFood Load (0.3ms) SELECT `user_foods`.* FROM `user_foods`
Rendered orders/index.html.haml within layouts/application (29.1ms)
Completed 200 OK in 68ms (Views: 52.5ms | ActiveRecord: 0.9ms)
```
すみませんuser_food.errors.messagesはどのようにしたら見れるのでしょうか...

[winterboum]

ああ、binding.pry　してください

[kabigon]

Started POST "/orders" for ::1 at 2020-05-15 19:04:26 +0900
Processing by OrdersController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"JUgMAyyz31VIytCOjlzOhG+7JDLvS6yRWdMkGFv0vzDT20zJ0etuchg6Ha8y2y43DbwtEAndQxOJy3BcL70tqQ==", "user_food"=>{"food"=>"りんご", "price"=>"400", "quantity"=>"1"}, "commit"=>"1"}

From: /Users/ryonukiyama/order/app/controllers/orders_controller.rb:20 OrdersController#create:

19: def create
=> 20: binding.pry
21: UserFood.create(user_food_params)
22: redirect_to root_path
23: end

失礼しました、、
こちらがbinding.pryをかけた時のログになります。

[winterboum]

ですから、
UserFood.create(user_food_params)　を
user_food = UserFood.create(user_food_params)
にして、
user_food.errors.messages
を見てください

[kabigon]

すみません、、
このような感じで良いでしょうか
19: def create
=> 20: binding.pry
21: user_food = UserFood.create(user_food_params)
22: redirect_to root_path
23: end

[1] pry(#<OrdersController>)> user_food.errors.messages
NoMethodError: undefined method `errors' for nil:NilClass
from (pry):14:in `create'

[winterboum]

２１を実行してから　user_food.errors.messages　を見ていただかないと

[kabigon]

後から機能追加しようとしていて外部キーの蘭を作っていたんですけど、
migrateからそのカラムを無くしたら無事保存することができました；；ありがとうございます。

Answer 1

不要なカラムを無くしたら無事保存できました。